Demand for mortgages in the US fell by 9.4% last week, even ...

Demand for mortgages in the US fell by 9.4% last week, even as mortgage rates fell to 6.8%.
How can mortgage demand be down even as rates are down 130+ basis points from their recent highs?
The answer to this question is that the effective outstanding mortgage rate is 3.7%.
90% of borrowers currently have interest rates below 5%.
Even if mortgage rates fell to 5%, the vast majority of borrowers would still have a financial disincentive to sell.
Particularly as investors accounted for many of the homes purchases since 2020.
Affordability getting worse, even with lower rates.